The word "fulsomenesses" refers to excessive or insincere flattery or praise, but there are many antonyms that express the opposite sentiment. Some examples of antonyms for "fulsomenesses" include candor, sincerity, honesty, modesty, and simplicity. These words describe a more straightforward, genuine approach to communication that values authenticity over exaggerated compliments. Other antonyms may include criticism, indifference, bluntness, or disregard, depending on the context in which the word is used. Ultimately, choosing the right antonym for "fulsomenesses" depends on the tone and purpose of the communication, but finding the right balance between sincerity and flattery is the key to effective communication.